Abstract: A drive current applied to a coil is reduced from a time at which a first collision signal indicating collision of a movable core with a valve element is input to a time at which a second collision signal indicating collision of the movable core with a stationary core is input.

Abstract: A fuel injection control apparatus is provided with a first valve opening timing determination portion that determines a first valve opening timing on the basis of a collision signal that is included in detected signals of an in-cylinder pressure sensor and indicates a collision between a movable core and a valve element and a second valve opening timing determination portion that determines a second valve opening timing on the basis of another collision signal that is included in the detected signals and indicates a collision between the movable core and a stationary core.

Abstract: A fuel injection control apparatus is provided with a first valve opening timing determination portion that determines a first valve opening timing on the basis of a collision signal that is included in detected signals of an in-cylinder pressure sensor and indicates a collision between a movable core and a valve element and a second valve opening timing determination portion that determines a second valve opening timing on the basis of another collision signal that is included in the detected signals and indicates a collision between the movable core and a stationary core.

Abstract: A drive current applied to a coil is reduced from a time at which a first collision signal indicating collision of a movable core with a valve element is input to a time at which a second collision signal indicating collision of the movable core with a stationary core is input.

Abstract: An inductive load driving device includes a first switching element, a second switching element, a counter current regeneration circuit, and a circuit element protection circuit. The first switching element is coupled between an output terminal of the power circuit and one end of the inductive load. The second switching element is coupled between the other end of the inductive load and a ground terminal. The counter current regeneration circuit is configured to supply to the output terminal of the power circuit, a counter current output from the other end of the inductive load when the first and second switching elements are in off-state. The circuit element protection circuit is configured to turn on the second switching element when a value of the output voltage of the power circuit becomes equal to or more than a threshold value.

Abstract: An inductive load driving device includes a first switching element, a second switching element, a counter current regeneration circuit, and a circuit element protection circuit. The first switching element is coupled between an output terminal of the power circuit and one end of the inductive load. The second switching element is coupled between the other end of the inductive load and a ground terminal. The counter current regeneration circuit is configured to supply to the output terminal of the power circuit, a counter current output from the other end of the inductive load when the first and second switching elements are in off-state. The circuit element protection circuit is configured to turn on the second switching element when a value of the output voltage of the power circuit becomes equal to or more than a threshold value.